PEGATRON LITHIUM ION BACK UP BATTERY MODEL: PB013 FOR: MODEM/GATEWAY DPC3939 DPQ3925 DPQ3212 ONLY* 10.8V—2600mAh For CISCO and Motorola Modems UPTO 8 HOUR BACKUP BATTERY FOR CABLE MODEM FOR DPC3939 DPQ3925 DPQ3212 MODELS ONLY Battery requires 12-17 Hours Previous to make use of. Backup Battery most effective helps the Telephone service in case of electrical outage. Battery Port for your Modem must be active by means of the activated for your modem by means of your service supplier. MAKE SURE YOU PLUG THE MODEM DIRECTLY INTO ELECTRICAL SOCKET AS THE BATTERY MAY NOT CHARGE IF PLUGGED INTO APS OR POWER SURGE PROTECTORS OR SO ON.
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